PACIFIC COAST OLIUUCII.ETA. 



171) 



EEFEKENCE TO LETTERS ON PLATES. 



a. c. ijl. anterior calcic gland. 



a. J', anterior fold of uepbridium. 



a. nephr. anterior nephridia. 



a. spd. anterior spermduct 



atr. atrium. 



hd. body-wall. 



bl. blood vessel or capilliiries. 



6^. 8. blood simis. 



br. bridge in uephridium. 



buc. buccal cavity. 



c. clusters of lunate cells. 



c. c. columnar cells. 



c. ep. c<t'lomic epithelium. 



c. gl. calciferous glands. 



ch. discharge chambers of glands. 



chlo. chioragogen cells. 



cil. ciliated epithelium. 



cl. c. clitellar cells. 



cl. clitellum. 



c. m. circular muscles. 



com. commissures. 



c. r. ciliated rosettes or sperm-funnels. 



c. t. connective tissue. 

 cu. cuticle. 



d. gl. dark staining glands. 

 d. pr. dorsal pore. 



d, V. dorsal vessel. 



e. epithelial cells. . 

 epl. epithelium. 



gl. glands. 



gl. c. unicellar glands. 



gl. pr. glandular part of prostate. 



gizz. gizzard. 



h. heart. 



hi/, hypodermis. 



i. s. (jr. intersegmental groove. 



I. c. large cells. 



I. m. longitudinal muscles. 

 m. muscles. 



m. air. muscular atrium. 

 mes. mesenteric tissue 

 TO. pr. muscular prostate. 



II. nephridia. 



n. c. nerve cells. 

 nc. nerve ganglion. 



nee. nei'lc of nepluidium. 



neph. nephridium. 



neph. p. nephropore. 



as. cEsophagus. 



ov. ovary. 



ovd. oviduct. 



org. sense organ. 



p. c. gl. posterior calciferous divertionluni. 



/)./. posterior fold, nephridium. 



/ilix. pharynx. 



]). neph. posterior nephridia. 



pr. prostate. 



;). .fpd. posterior spermduct. 



pr. slo. prostomium. 



ps. penial setae. 



prl. peritoneum. 



.If. secreted matter. 



s. int. sacculated intestine. 



Sep. gl. septal gland. 



Sep. septum. 



s. gl. suprapharj'iigeal glands. 



s. org b. sense organ cells in equatoreal zone. 



s. o?-<jr. pr. sense organ cells in prostomium. 



.s/)c sperm-cells. 



spd. spermduct. 



spgn. spermatogonia. 



■ipr. spur of nephridium. 



,s. ps. sac with penial setaj. 



.''p. s. sperm-sacs. 



.s. ph. sgl. subphai'yngeal glands. 



spth. spermatheca. 



spth. p. spermathecal pore. 



t. testes. 



t. m. transverse muscles. 



trb. trabecula. 



//*. spd. thicker part of spermduct. 



In. tubular intestine. 



tub p. tubercula pubertatis. 



lij. typhlosole. 



u. c. unicellar glands. 



V. g. ventral ganglion. 



V. V. ventral vessel. 



V. sgl. ventral gland. 



!«. "windings" of nephridial ducts. 



